/*******************************************************************************
 * Copyright 2017 Bstek
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License.  You may obtain a copy
 * of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations under
 * the License.
 ******************************************************************************/
package com.bstek.urule.parse;

import com.bstek.urule.action.Action;
import com.bstek.urule.action.VariableAssignAction;
import com.bstek.urule.model.library.Datatype;
import com.bstek.urule.model.rule.lhs.LeftType;
import org.apache.commons.lang.StringUtils;
import org.dom4j.Element;

/**
 * @author Jacky.gao
 * @since 2014年12月23日
 */
public class VariableAssignActionParser extends ActionParser {
    public Action parse(Element element) {
        VariableAssignAction action = new VariableAssignAction();
        String referenceName = element.attributeValue("reference-name");
        if (StringUtils.isNotEmpty(referenceName)) {
            action.setReferenceName(referenceName);
        }
        String variable = element.attributeValue("var");
        if (StringUtils.isEmpty(variable)) {
            variable = element.attributeValue("property-name");
        }
        action.setVariableName(variable);
        String variableLabel = element.attributeValue("var-label");
        if (StringUtils.isEmpty(variableLabel)) {
            variableLabel = element.attributeValue("property-label");
        }
        action.setVariableLabel(variableLabel);
        String variableCategory = element.attributeValue("var-category");
        action.setVariableCategory(variableCategory);
        String datatype = element.attributeValue("datatype");
        if (StringUtils.isNotEmpty(datatype)) {
            action.setDatatype(Datatype.valueOf(datatype));
        }
        String type = element.attributeValue("type");
        if (StringUtils.isNotEmpty(type)) {
            action.setType(LeftType.valueOf(type));
        }
        for (Object obj : element.elements()) {
            if (obj == null || !(obj instanceof Element)) {
                continue;
            }
            Element ele = (Element) obj;
            if (valueParser.support(ele.getName())) {
                action.setValue(valueParser.parse(ele));
                break;
            }
        }
        return action;
    }

    public boolean support(String name) {
        return name.equals("var-assign");
    }
}
